Audio listening system



FIG. 1 is a perspective view of an audio listening system showing our new design, one earpiece is shown separately for purposes of illustration;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a front view of an audio listening system with a pair of earpieces.

The broken lines in the figures show portions of the audio listening system that form no part of the claimed design. 

CLAIM The ornamental design for an audio listening system, as shown and described. 